NEW YORK, Aug. 17 /PRNewswire/ -- The American Stock Exchange(R) (Amex(R)) will launch trading in options on Thursday, August 18, 2005 on the Nasdaq Stock Market listed stocks of: -- Click Commerce, Incorporated (Stock Symbol: CKCM/Option Symbol: QCP) -- Dobson Communications Corporation, Class A (Stock Symbol: DCEL/Option Symbol: QDM) -- Educate, Incorporated (Stock Symbol: EEEE/Option Symbol: QIE) -- Vignette Corporation (Stock Symbol: VIGN/Option Symbol: QVV) Click Commerce, Incorporated options will open with position limits of 7,500,000 shares. The options will trade on the March expiration cycle. The specialist will be Charlton Specialist Partners, LLC. Click Commerce, Inc. provides Internet-based, business-to-business (B2B) enterprise channel management software and services. The Company's products and services enable large, global manufacturers to manage and interact in collaborative B2B electronic commerce throughout their distribution channels. Dobson Communications Corporation, Class A options will open with position limits of 25,000,000 shares. The options will trade on the March expiration cycle. The specialist will be Susquehanna Investment Group. Dobson Communications Corporation provides rural and suburban cellular telephone services. The Company serves markets in portions of Arizona, California, Kansas, Maryland, Missouri, New York, Ohio, Oklahoma, Pennsylvania, Texas and West Virginia. Educate, Incorporated options will open with position limits of 2,500,000 shares. The options will trade on the March expiration cycle. The specialist will be Group One Trading L.P. Educate, Inc. provides tutoring and other supplemental education services to pre-kindergarten through 12th grade students. The Company operates learning centers, institutional services and online learning services business segments. Vignette Corporation options will open with position limits of 2,500,000 shares. The options will trade on the January expiration cycle. The specialist will be Trinity Derivatives Group LLC. Vignette Corporation supplies e-Business applications for building online businesses. The Company's products enable Internet businesses to create and extend relationships with prospects and customers and ease high-volume transaction exchanges with suppliers and partners. For more information on any Amex-listed company, please visit http://www.amex.com/. The American Stock Exchange(R) (Amex(R)) is the only primary exchange that offers trading across a full range of equities, options and exchange traded funds (ETFs), including structured products and HOLDRS(SM). In addition to its role as a national equities market, the Amex is the pioneer of the ETF, responsible for bringing the first domestic product to market in 1993. Leading the industry in ETF listings, the Amex lists 164 ETFs. The Amex is also one of the largest options exchanges in the U.S., trading options on broad-based and sector indexes as well as domestic and foreign stocks. For more information, please visit http://www.amex.com/. DATASOURCE: The American Stock Exchange CONTACT: Mary Chung of American Stock Exchange, +1-212-306-1641, Web site: http://www.amex.com/

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